Resident Evil: The Mercenaries 3D

Resident Evil: The Mercenaries 3D (Biohazard: The Mercenaries 3D in Japan) is a third-person shooter video game developed exclusively for the Nintendo 3DS, based on the arcade "The Mercenaries" mode from Resident Evil 4 and Resident Evil 5. The characters, weapons, and most of the levels are from these two games.

The following weapons appear in the video game Resident Evil: The Mercenaries 3D:

Handguns

Beretta 92FS

Chris's primary handgun is a Beretta 92FS. Holds an incorrect 20 rounds in the standard magazine.

Beretta 92FS - 9x19mm

Chris with a Beretta 92FS pistol.

HUNK takes aim with the 92FS.

Beretta 92FS "Samurai Edge" (Albert Wesker)

This modified Beretta 92FS Brigadier is wielded by Albert Wesker. The gun is from RE5, with all the features seen there such as the two-tone finish with standard and Inox parts, an extended rail mount, a skeleton hammer, an extended beavertail, and is equipped with a LAM-1000 under the barrel. It is more powerful than the standard 92FS, but holds only 9 rounds in the magazine.

Beretta 96FS "Samurai Edge"

This modified .40 S&W Beretta 96FS is Barry Burton's primary weapon. It has a longer barrel, compensator, and Brigadier slide. Like Wesker's Samurai Edge, it also has a nonexistent 9-round capacity. (The real 96 series have 10, 11, 12, 13 or 15-round magazines.)

Airsoft replica of Barry's Samurai Edge

Barry holds his custom Beretta 96FS. Even though the graphics are not topnotch, the Brigadier slide is clearly visible.

Colt Python

Barry Burton carries a custom Colt Python that he only uses in quick time events. This revolver is originally from Resident Evil (2002), but can also be seen in Resident Evil 5 (after obtaining the "Mercenaries Reunion" DLC).

Prop version of Barry's Python

Barry pulls out his Python to execute an infested monk. Due to an error, the Python is still visible in his holster too.

Heckler & Koch P8

Heckler & Koch VP70M

The H&K VP70M, a.k.a. "Matilda" is used by Claire Redfield. Has no stock, and holds only 15 rounds instead of the correct 18. Fires in semi-auto if the fire key is tapped, 3-round burst if the button is held; this isn't possible, as the VP70M can only fire in bursts if it is fitted with its stock.

Heckler & Koch VP70M - 9x19mm

Claire holds a H&K VP70M pistol fitted with under-barrel laser.

IMI Desert Eagle Mark XIX

The Desert Eagle Mark XIX, or "Lightning Hawk" as the game refers to it is used by Wesker. It has an incorrect 7-round magazine. Eight or nine rounds would be the correct, as it classified as a "Magnum" weapon.

IMI Desert Eagle Mark XIX with chrome finish - .50 AE

Wesker aims the Desert Eagle. Unlike in RE5, the Desert Eagle is shown to operate in DAO instead of the correct SA.

Mauser C96 Red 9

The Mauser C96 Red 9 is a hidden weapon, that can be used by any character once unlocked. It is very powerful and accurate, but holds only 3 rounds for some reason.

Broomhandle Mauser C96 "Red 9" - 9x19mm.

Smith & Wesson Model 500

The Smith & Wesson Model 500 is the Magnum-type weapon used by Barry Burton. Holds a correct 5 rounds, but comes with no spare ammo.

Smith & Wesson Model 500 - .500 S&W Magnum

Barry with a Model 500 revolver.

Submachine Guns

Heckler & Koch MP5A3

The Heckler & Koch MP5A3 with red dot sight and dedicated forend weapon-light (both have aesthetic purposes only) is used by Rebecca Chambers. Holds 60 rounds in the standard magazine. During some levels it has a 90-round capacity.

Heavy Weapons

M134 Minigun

Airsoft handheld M134 Minigun with 'Chainsaw grip' to handle the recoil force. This variant was seen in Terminator 2: Judgement Day. This is an airsoft version which retains the half-circle attachment point for the M60 foregrip from Predator; the real T2 minigun did not have this - (fake) 7.62x51mm NATO

A Gatling Gun Majini spins up the M134 in the trailer.

Milkor MGL Mk 1L

The standard, un-modified Milkor MGL Mk 1L firing frag rounds is used by Rebecca Chambers. It Holds only 4 grenades instead of the correct 6. Claire Redfield's and HUNK's MGLs are loaded with acid and flash rounds, respectively. They correctly hold 6 grenades.